From 53e41b76a8ff27f4969e3816c0ce3a1af8156091 Mon Sep 17 00:00:00 2001 From: Cristian Ciocaltea Date: Fri, 26 Jan 2024 21:21:25 +0200 Subject: [PATCH 1/2] dt-bindings: net: starfive,jh7110-dwmac: Add JH7100 SoC compatible The Synopsys DesignWare MAC found on StarFive JH7100 SoC is mostly similar to the newer JH7110, but it requires only two interrupts and a single reset line, which is 'ahb' instead of the commonly used 'stmmaceth'. Since the common binding 'snps,dwmac' allows selecting 'ahb' only in conjunction with 'stmmaceth', extend the logic to also permit exclusive usage of the 'ahb' reset name. This ensures the following use cases are supported: JH7110: reset-names = "stmmaceth", "ahb"; JH7100: reset-names = "ahb"; other: reset-names = "stmmaceth"; Also note the need to use a different dwmac fallback, as v5.20 applies to JH7110 only, while JH7100 relies on v3.7x. Additionally, drop the reset description items from top-level binding as they are already provided by the included snps,dwmac schema. Signed-off-by: Cristian Ciocaltea Reviewed-by: Jacob Keller Reviewed-by: Rob Herring Reviewed-by: Krzysztof Kozlowski Signed-off-by: David S. Miller --- .../devicetree/bindings/net/snps,dwmac.yaml | 11 +-- .../bindings/net/starfive,jh7110-dwmac.yaml | 72 +++++++++++++------ 2 files changed, 57 insertions(+), 26 deletions(-) diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml index 5c2769dc689a..90c4db178c67 100644 --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml @@ -95,6 +95,7 @@ properties: - snps,dwmac-5.20 - snps,dwxgmac - snps,dwxgmac-2.10 + - starfive,jh7100-dwmac - starfive,jh7110-dwmac reg: @@ -144,10 +145,12 @@ properties: - description: AHB reset reset-names: - minItems: 1 - items: - - const: stmmaceth - - const: ahb + oneOf: + - items: + - enum: [stmmaceth, ahb] + - items: + - const: stmmaceth + - const: ahb power-domains: maxItems: 1 diff --git a/Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml b/Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml index 5e7cfbbebce6..0d1962980f57 100644 --- a/Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml +++ b/Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml @@ -16,16 +16,20 @@ select: compatible: contains: enum: + - starfive,jh7100-dwmac - starfive,jh7110-dwmac required: - compatible properties: compatible: - items: - - enum: - - starfive,jh7110-dwmac - - const: snps,dwmac-5.20 + oneOf: + - items: + - const: starfive,jh7100-dwmac + - const: snps,dwmac + - items: + - const: starfive,jh7110-dwmac + - const: snps,dwmac-5.20 reg: maxItems: 1 @@ -46,24 +50,6 @@ properties: - const: tx - const: gtx - interrupts: - minItems: 3 - maxItems: 3 - - interrupt-names: - minItems: 3 - maxItems: 3 - - resets: - items: - - description: MAC Reset signal. - - description: AHB Reset signal. - - reset-names: - items: - - const: stmmaceth - - const: ahb - starfive,tx-use-rgmii-clk: description: Tx clock is provided by external rgmii clock. @@ -94,6 +80,48 @@ required: allOf: - $ref: snps,dwmac.yaml# + - if: + properties: + compatible: + contains: + const: starfive,jh7100-dwmac + then: + properties: + interrupts: + minItems: 2 + maxItems: 2 + + interrupt-names: + minItems: 2 + maxItems: 2 + + resets: + maxItems: 1 + + reset-names: + const: ahb + + - if: + properties: + compatible: + contains: + const: starfive,jh7110-dwmac + then: + properties: + interrupts: + minItems: 3 + maxItems: 3 + + interrupt-names: + minItems: 3 + maxItems: 3 + + resets: + minItems: 2 + + reset-names: + minItems: 2 + unevaluatedProperties: false examples: From 8d4597b871210429bda0f5c3a8816b7d9b6daf7e Mon Sep 17 00:00:00 2001 From: Cristian Ciocaltea Date: Fri, 26 Jan 2024 21:21:26 +0200 Subject: [PATCH 2/2] net: stmmac: dwmac-starfive: Add support for JH7100 SoC Add a missing quirk to enable support for the StarFive JH7100 SoC. Additionally, for greater flexibility in operation, allow using the rgmii-rxid and rgmii-txid phy modes. Co-developed-by: Emil Renner Berthing Signed-off-by: Emil Renner Berthing Signed-off-by: Cristian Ciocaltea Reviewed-by: Jacob Keller Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller --- drivers/net/ethernet/stmicro/stmmac/Kconfig | 6 ++-- .../ethernet/stmicro/stmmac/dwmac-starfive.c | 32 ++++++++++++++++--- 2 files changed, 31 insertions(+), 7 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig index 85dcda51df05..4ec61f1ee71a 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Kconfig +++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig @@ -165,9 +165,9 @@ config DWMAC_STARFIVE help Support for ethernet controllers on StarFive RISC-V SoCs - This selects the StarFive platform specific glue layer support for - the stmmac device driver. This driver is used for StarFive JH7110 - ethernet controller. + This selects the StarFive platform specific glue layer support + for the stmmac device driver. This driver is used for the + StarFive JH7100 and JH7110 ethernet controllers. config DWMAC_STI tristate "STi GMAC support" diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c index 5d630affb4d1..4e1076faee0c 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c @@ -15,13 +15,20 @@ #include "stmmac_platform.h" -#define STARFIVE_DWMAC_PHY_INFT_RGMII 0x1 -#define STARFIVE_DWMAC_PHY_INFT_RMII 0x4 -#define STARFIVE_DWMAC_PHY_INFT_FIELD 0x7U +#define STARFIVE_DWMAC_PHY_INFT_RGMII 0x1 +#define STARFIVE_DWMAC_PHY_INFT_RMII 0x4 +#define STARFIVE_DWMAC_PHY_INFT_FIELD 0x7U + +#define JH7100_SYSMAIN_REGISTER49_DLYCHAIN 0xc8 + +struct starfive_dwmac_data { + unsigned int gtxclk_dlychain; +}; struct starfive_dwmac { struct device *dev; struct clk *clk_tx; + const struct starfive_dwmac_data *data; }; static void starfive_dwmac_fix_mac_speed(void *priv, unsigned int speed, unsigned int mode) @@ -67,6 +74,8 @@ static int starfive_dwmac_set_mode(struct plat_stmmacenet_data *plat_dat) case PHY_INTERFACE_MODE_RGMII: case PHY_INTERFACE_MODE_RGMII_ID: + case PHY_INTERFACE_MODE_RGMII_RXID: + case PHY_INTERFACE_MODE_RGMII_TXID: mode = STARFIVE_DWMAC_PHY_INFT_RGMII; break; @@ -89,6 +98,14 @@ static int starfive_dwmac_set_mode(struct plat_stmmacenet_data *plat_dat) if (err) return dev_err_probe(dwmac->dev, err, "error setting phy mode\n"); + if (dwmac->data) { + err = regmap_write(regmap, JH7100_SYSMAIN_REGISTER49_DLYCHAIN, + dwmac->data->gtxclk_dlychain); + if (err) + return dev_err_probe(dwmac->dev, err, + "error selecting gtxclk delay chain\n"); + } + return 0; } @@ -114,6 +131,8 @@ static int starfive_dwmac_probe(struct platform_device *pdev) if (!dwmac) return -ENOMEM; + dwmac->data = device_get_match_data(&pdev->dev); + dwmac->clk_tx = devm_clk_get_enabled(&pdev->dev, "tx"); if (IS_ERR(dwmac->clk_tx)) return dev_err_probe(&pdev->dev, PTR_ERR(dwmac->clk_tx), @@ -144,8 +163,13 @@ static int starfive_dwmac_probe(struct platform_device *pdev) return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res); } +static const struct starfive_dwmac_data jh7100_data = { + .gtxclk_dlychain = 4, +}; + static const struct of_device_id starfive_dwmac_match[] = { - { .compatible = "starfive,jh7110-dwmac" }, + { .compatible = "starfive,jh7100-dwmac", .data = &jh7100_data }, + { .compatible = "starfive,jh7110-dwmac" }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, starfive_dwmac_match);